1/*
2 * arch/xtensa/kernel/asm-offsets.c
3 *
4 * Generates definitions from c-type structures used by assembly sources.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License.  See the file "COPYING" in the main directory of this archive
8 * for more details.
9 *
10 * Copyright (C) 2005 Tensilica Inc.
11 *
12 * Chris Zankel <chris@zankel.net>
13 */
14
15#include <asm/processor.h>
16
17#include <linux/types.h>
18#include <linux/stddef.h>
19#include <linux/thread_info.h>
20#include <linux/ptrace.h>
21#include <asm/ptrace.h>
22#include <asm/processor.h>
23#include <asm/uaccess.h>
24
25#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))
26#define BLANK() asm volatile("\n->" : : )
27
28int main(void)
29{
30	/* struct pt_regs */
31	DEFINE(PT_PC, offsetof (struct pt_regs, pc));
32	DEFINE(PT_PS, offsetof (struct pt_regs, ps));
33	DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
34	DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
35	DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
36	DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
37	DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
38	DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
39	DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
40	DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
41	DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
42	DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
43	DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
44	DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
45	DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
46	DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
47	DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
48	DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
49	DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
50	DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
51	DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
52	DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
53	DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
54	DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
55	DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
56	DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
57	DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
58	DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
59	DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
60	DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
61	DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
62	DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
63	DEFINE(PT_SIZE, sizeof(struct pt_regs));
64	DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
65	DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));
66	BLANK();
67
68	/* struct task_struct */
69	DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
70	DEFINE(TASK_MM, offsetof (struct task_struct, mm));
71	DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
72	DEFINE(TASK_PID, offsetof (struct task_struct, pid));
73	DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
74	DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
75	DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));
76	BLANK();
77
78	/* struct thread_info (offset from start_struct) */
79	DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
80	DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
81	DEFINE(THREAD_CP_SAVE, offsetof (struct task_struct, thread.cp_save));
82	DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, thread.current_ds));
83	BLANK();
84
85	/* struct mm_struct */
86	DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
87	DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
88	DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
89	BLANK();
90	DEFINE(PT_SINGLESTEP_BIT, PT_SINGLESTEP_BIT);
91
92	/* constants */
93	DEFINE(_CLONE_VM, CLONE_VM);
94	DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
95
96	return 0;
97}
98